Perhaps you should try some spelling variations:
multiobjective estimation » multiobjective optimization
optimization algorithmss » optimization algorithms, optimisation algorithm, estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
policy optimization » topology optimization

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified multiobjective estimation algorithms ) or ( modified policy optimization algorithmss ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified multiobjective estimation algorithms ) OR ( modified policy optimization algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (( modified multiobjective estimation algorithms ) or ( modified policy optimization algorithmss ))*.